4522312638 has 24 divisors (see below), whose sum is σ = 9813896976. Its totient is φ = 1505048580.

The previous prime is 4522312637. The next prime is 4522312649. The reversal of 4522312638 is 8362132254.

4522312638 is a `hidden beast` number, since 4 + 5 + 2 + 2 + 3 + 12 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4522312631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7166583 + ... + 7167213.

It is an arithmetic number, because the mean of its divisors is an integer number (408912374).

Almost surely, 2^4522312638 is an apocalyptic number.

4522312638 is an abundant number, since it is smaller than the sum of its proper divisors (5291584338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4522312638 is an frugal number, since it uses more digits than its factorization.

4522312638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 636 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 4522312638 is about 67248.1422643035. The cubic root of 4522312638 is about 1653.6878197458.

The spelling of 4522312638 in words is "four billion, five hundred twenty-two million, three hundred twelve thousand, six hundred thirty-eight".